Human's life for three days: Yesterday, today and tomorrow.
Yesterday is history,are you sorry for it? I think everybody in the past will have something wrong. But who has never made a mistake?So please don't for the mistake of the past and sad. We should look forward with a hope.
Yesterday was yesterday,it wasn't come back. But we have today. We must take good use of today. Today we can finish one regret from yesterday. And today is the key to the tomorrow. What have we done today,tomorrow can be what kind of the result. If we study hard today,maybe we can have a brilliant tomorrow.
Yesterday was past,it was never come. Tomorrow will come. Today is a process of connecting. The most important is that we should do a good job in every second.